Systematics of Scissors Mode in Gd Nuclei from Experiments with the DANCE Detector

作者：Kroll J^*; Agvaanluvsan U; Baramsai B; Becker J A; Becvar F; Bredeweg T A; Chyzh A; Couture A; Dashdorj D; Haight R C; Jandel M; Keksis A L; Krticka M; Mitchell G E; O'Donnell J M; Parker W; Rundberg R S; Ullmann J L; Valenta S; Vieira D J; Walker C L; Wilhelmy J B; Wouters J M; Wu C Y

来源：Nuclear Data Sheets, 2014, 119: 158-161.

DOI：10.1016/j.nds.2014.08.044

Multi-step cascade gamma-ray spectra from neutron capture at isolated resonances of Gd-152,Gd-154-158 nuclei were measured at the LANSCE/DANCE time-of-flight facility in Los Alamos National Laboratory. The main objective of these experiments was to obtain new information on photon strength functions with emphasis on the role of the M1 scissors mode vibration. An analysis of the data obtained shows that the scissors mode plays a significant role in the ground state transitions, as well as in the transitions populating all excited states of the studied nuclei. The estimates of the scissors mode strength indicate that for Gd-157,Gd-159 this strength is significantly higher than in neighboring even-even nuclei Gd-156,Gd-158. The results are compared with the (gamma,gamma ') data for the ground-state scissors mode and the results from He-3-induced reactions.

• 出版日期2014-5
• 单位Los Alamos